Derived Cell Style

In the sample GridDataBoundImageCell there is a drop down box which shows an image. I created - based on the sample - an own celltype which shows images as combobox items. Now if I show the "listboxpart" of the combobox (or the picturebox in the sample) the whole application gets "inactive" (shown with the inactive title bar). How can I fix that problem?

> In the sample GridDataBoundImageCell there is a drop down box which shows an image. I created - based on the sample - an own celltype which shows images as combobox items. Now if I show the "listboxpart" of the combobox (or the picturebox in the sample) the whole application gets "inactive" (shown with the inactive title bar). How can I fix that problem?

If you are dropping a ListBox, try using a GridComboBoxListBoxPart instead. This calss is derived from ListBox, but can be dropped without gaining input focus. It overrides WndProc to avoid the mouse activation. If you have the source code you can see how it avoids gaining focus.

I am deriving the list box from GridComboBoxListBoxPart. Same behaviour.

Can you attach a sample project showing the problem? What version of the grid are you using, 1.5.2.0?

I attached a sample showing you the problem an yes, I'm using 1.5.2.0.

Hi, did you get the problem too?

Yes we do see the problem. We will get back to you when we have a suggestion.

Iy our GridImageBoxCellRenderer class, try adding this override.

Public Overrides Sub DropDownContainerShowedDropDown(ByVal sender As Object, ByVal e As System.EventArgs)
        Me.DropDownContainer.FocusParent()
        'MyBase.DropDownContainerShowedDropDown(sender, e)
End Sub

The point is not to call the base class as that is what is setting focus to the chicl control.

You did it. It works. Thanx very much Clay Peter

Courtesy of Stefan. :)